NEET

Well, there is a very less chance but you can still try your luck. Don't be demotivated, you have secured a very good rank and you will definitely be able to get a seat in medical college next year if not this year.

Go through this link for the best books for NEET preparation. https://www.shiksha.com/medicine-health-sciences/articles/neet-preparation-tips-syllabus-and-best-books-blogId-22271.

If you have missed the chance, then there is no way to register now.

No, the NEET cut-off is not reduced for BDS.

All the rounds are over, you cannot apply now.

Yes, You can give the NEET exam while in your graduation. If you got selected and got a medical college then you just have to get a migration out of your B.Sc. Course and submit it to the medical college you get.
1st year B.Sc. Students have a awesome opportunity to score good marks in NEET as their knowledge about the exam is very new and their subject knowledge is also intact. They can easily clear the cutoff by proper preparation.

Eligibility for NEET is 50% marks in 12th class.

It will be updated next week.

You can refer to the link given below-
https://www.shiksha.com/university/jamia-hamdard-delhi-3082/admission.

NEET is available in more than 12 languages.